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/**
* Copyright (C) 2022-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/db/transaction/transaction_operations.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
namespace {
TEST(TransactionOperationsTest, Basic) {
TransactionOperations ops;
ASSERT(ops.isEmpty());
ASSERT_EQ(ops.numOperations(), 0);
ASSERT_EQ(ops.getTotalOperationBytes(), 0);
TransactionOperations::TransactionOperation op;
auto opSize = repl::DurableOplogEntry::getDurableReplOperationSize(op);
ASSERT_GTE(opSize, 1U);
ASSERT_OK(ops.addOperation(op));
ASSERT_FALSE(ops.isEmpty());
ASSERT_EQ(ops.numOperations(), 1U);
// Empty pre-images and post-images do not count towards operation size.
ASSERT(op.getPreImage().isEmpty());
ASSERT(op.getPostImage().isEmpty());
ASSERT_EQ(ops.getTotalOperationBytes(), opSize);
// The getMutableOperationsForTransactionParticipant() method supports integration with
// existing TransactionParticipant usage and OpObserver interfaces.
auto* mutableOps = ops.getMutableOperationsForTransactionParticipant();
ASSERT_EQ(mutableOps->size(), ops.numOperations());
std::size_t mutableOpsTotalOperationBytes = 0;
for (const auto& mutableOp : *mutableOps) {
mutableOpsTotalOperationBytes +=
repl::DurableOplogEntry::getDurableReplOperationSize(mutableOp);
}
ASSERT_EQ(mutableOpsTotalOperationBytes, ops.getTotalOperationBytes());
// Use clear() to reset container state.
ops.clear();
ASSERT(ops.isEmpty());
ASSERT_EQ(ops.numOperations(), 0);
ASSERT_EQ(ops.getTotalOperationBytes(), 0);
}
TEST(TransactionOperationsTest, AddTransactionFailsOnDuplicateStatementIds) {
TransactionOperations::TransactionOperation op1;
std::vector<StmtId> stmtIds1 = {1, 2, 3};
op1.setStatementIds(stdx::variant<StmtId, std::vector<StmtId>>(stmtIds1));
TransactionOperations::TransactionOperation op2;
std::vector<StmtId> stmtIds2 = {3, 4, 5};
op2.setStatementIds(stdx::variant<StmtId, std::vector<StmtId>>(stmtIds2));
TransactionOperations ops;
ASSERT_OK(ops.addOperation(op1));
ASSERT_EQ(static_cast<ErrorCodes::Error>(5875600), ops.addOperation(op2));
}
TEST(TransactionOperationsTest, AddTransactionIncludesPreImageStatistics) {
TransactionOperations ops;
// The size of 'op1' is added to the total byte count but it does not have
// the additional criteria to be added to 'numberOfPrePostImages'.
// See SERVER-58694.
TransactionOperations::TransactionOperation op1;
op1.setPreImage(BSON("a" << 123));
ASSERT_OK(ops.addOperation(op1));
ASSERT_EQ(ops.getTotalOperationBytes(),
repl::DurableOplogEntry::getDurableReplOperationSize(op1) +
static_cast<std::size_t>(op1.getPreImage().objsize()));
ASSERT_EQ(ops.getNumberOfPrePostImagesToWrite(), 0);
// Set "pre-image for retryable writes" flag to include the pre-image in
// the pre/post image count.
TransactionOperations::TransactionOperation op3;
op3.setPreImage(BSON("c" << 123));
op3.setPreImageRecordedForRetryableInternalTransaction();
ASSERT_OK(ops.addOperation(op3));
ASSERT_EQ(ops.getTotalOperationBytes(),
repl::DurableOplogEntry::getDurableReplOperationSize(op1) +
static_cast<std::size_t>(op1.getPreImage().objsize()) +
repl::DurableOplogEntry::getDurableReplOperationSize(op3) +
static_cast<std::size_t>(op3.getPreImage().objsize()));
ASSERT_EQ(ops.getNumberOfPrePostImagesToWrite(), 1U);
// Pre/post image counter should be reset after clear().
ops.clear();
ASSERT_EQ(ops.getNumberOfPrePostImagesToWrite(), 0);
}
TEST(TransactionOperationsTest, AddTransactionIncludesPostImageStatistics) {
TransactionOperations ops;
TransactionOperations::TransactionOperation op1;
op1.setPostImage(BSON("a" << 123));
ASSERT_OK(ops.addOperation(op1));
ASSERT_EQ(ops.getTotalOperationBytes(),
repl::DurableOplogEntry::getDurableReplOperationSize(op1) +
static_cast<std::size_t>(op1.getPostImage().objsize()));
ASSERT_EQ(ops.getNumberOfPrePostImagesToWrite(), 1U);
// Pre/post image counter should be reset after clear().
ops.clear();
ASSERT_EQ(ops.getNumberOfPrePostImagesToWrite(), 0);
}
TEST(TransactionOperationsTest, AddTransactionIncludesPreAndPostImageStatistics) {
TransactionOperations ops;
TransactionOperations::TransactionOperation op1;
op1.setPreImage(BSON("a" << 123));
op1.setPreImageRecordedForRetryableInternalTransaction();
ASSERT_OK(ops.addOperation(op1));
ASSERT_EQ(ops.getTotalOperationBytes(),
repl::DurableOplogEntry::getDurableReplOperationSize(op1) +
static_cast<std::size_t>(op1.getPreImage().objsize()));
ASSERT_EQ(ops.getNumberOfPrePostImagesToWrite(), 1U);
TransactionOperations::TransactionOperation op2;
op2.setPostImage(BSON("b" << 123));
ASSERT_OK(ops.addOperation(op2));
ASSERT_EQ(ops.getTotalOperationBytes(),
repl::DurableOplogEntry::getDurableReplOperationSize(op1) +
static_cast<std::size_t>(op1.getPreImage().objsize()) +
repl::DurableOplogEntry::getDurableReplOperationSize(op2) +
static_cast<std::size_t>(op2.getPostImage().objsize()));
ASSERT_EQ(ops.getNumberOfPrePostImagesToWrite(), 2U);
// Pre/post image counter should be reset after clear().
ops.clear();
ASSERT_EQ(ops.getNumberOfPrePostImagesToWrite(), 0);
}
TEST(TransactionOperationsTest, AddTransactionEnforceTotalOperationSizeLimit) {
TransactionOperations::TransactionOperation op1;
auto opSize1 = repl::DurableOplogEntry::getDurableReplOperationSize(op1);
TransactionOperations::TransactionOperation op2;
auto opSize2 = repl::DurableOplogEntry::getDurableReplOperationSize(op2);
auto sizeLimit = opSize1 + opSize2 - 1;
TransactionOperations ops;
ASSERT_OK(ops.addOperation(op1, sizeLimit));
ASSERT_EQ(ErrorCodes::TransactionTooLarge, ops.addOperation(op2, sizeLimit));
}
} // namespace
} // namespace mongo
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